本周周四（2019年09月19日）将举行本学期第1次实验室学术沙龙,首先由韩宁旭教授为新一期学术沙龙进行部署开场。
报告题目：混凝土中多离子传输机制研究及数值模拟
报告人：冯甘霖 博士
报告时间：2019年9月19日下午4:00-6:00
报告地点：南校区土木与交通工程学院C501
冯甘霖博士简介：
冯甘霖，博士，深圳大学土木与交通工程学院博士后，广东省滨海土木工程耐久性重点实验室研究人员，主要研究方向为混凝土结构/材料的耐久性分析。2013-2018年获国家留学基金委资助于英国Plymouth大学攻读博士学位，师从李龙元教授。攻读博士学位期间主要研究方向为多孔介质中微观尺度多离子传输数值模拟， 参与欧洲第七框架重大国际合作项目（European Research Council for the Research Grant, FP7-PEOPLE-2011-IRSES-294955）以及钢筋混凝土结构的可持续电化学防腐系统的研发（Development of Sustainable Electrochemical Corrosion Protection Systems for Reinforced Concrete Structures）。
主要研究内容介绍：
This study presents a two-dimensional, two-phase ionic transport model with a surface charge at solid-liquid interfaces. The present model is applied to investigate the effect of surface charges at the solid-liquid interface on the ionic transport in a cement paste when it is subjected to an externally applied electric field. The surface charge in the present model is considered by modifying the Nernst-Planck equation in which the electrostatic potential is dependent not only on the externally applied electric field but also on the dissimilar diffusivity of different ionic species including the surface charges. The coupled transport equations of individual ionic species are solved numerically using a finite element method built in commercial software COMSOL. Some important features about the effect of surface charge on the concentration distribution, migration speed and flux of individual ionic species are discussed.
